CVE-2022-35249 — A information disclosure vulnerability exists in Rocket

A information disclosure vulnerability exists in Rocket.Chat <v5 where the getUserMentionsByChannel meteor server method discloses messages from private channels and direct messages regardless of the users access permission to the room.

01What is this vulnerability?

A information disclosure vulnerability exists in Rocket.Chat <v5 where the getUserMentionsByChannel meteor server method discloses messages from private channels and direct messages regardless of the users access permission to the room.

02Affected products

Vendor	Product	Versions
n	a / Rocket.Chat	Fixed in version 5.0>

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2022-09-23T18:28:12.000Z
• Last modified: 2025-05-22T18:50:23.134Z

09References

• hackerone.com — https://hackerone.com/reports/1410246